M30245_06 RENESAS [Renesas Technology Corp], M30245_06 Datasheet - Page 67

• Manufacturer Part Number: M30245_06
• Description: RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
(6) Input to the serial I/O and the direction register
(7) Pins related to the serial I/O
(e) Bus collision detection function
• Transmission WITH: CTS function, WITHOUT: other functions
• Reception WITH: RTS function, WITHOUT: other functions
• Transmission WITH: direct format
• Reception WITH: direct format
To input an external signal to the serial I/O, set the direction register of the relevant port to input.
• CTS
• RTS
• CLK
• RxD
• TxD
Note: Since TxD
This function is to sample the output level of the TxD pin and the input level of the RxD pin; if their
values are different, then an interrupt request occurs.
The following examples are described in section 2.4.2 and 2.4.3.
Also, the SIM interface is used by adding some extra settings in clock-asynchronous serial I/O mode.
Direct or inverse format is selected by connecting SIM card.
The following examples are described in section 2.4.4 and 2.4.5.
_________ _________ __________ _________
_________ _________ _________ _________
0
0
0
0
0
, TxD
, CLK
, RxD
, CTS
, RTS
1
1
1
1
1
, TxD
, CLK
, RxD
, CTS
, RTS
page 58 of 354
2
pin is N-channel open drain, this pin needs pull-up resistor.
2
2
2
_______
, TxD
2
2
, CLK
, RxD
, CTS
, RTS
_______
3
3
3
3
3
pins
pins
pins
pins
pins
:Input pins for the CTS function
:Output pins for the RTS function
:Input pins for the transfer clock
:Input pins for data
:Output pins for data (Note)
_______
_______
2. UART